Erect Two Modular Distillation Columns – Gantry Rigging
Scope Of Work:
Off-load and erect two (2) fully prefabricated distillation column modules within an actively processing pharmaceutical environment. The heavy rigging project was completed in two phases, seven (7) weeks apart; each phase being one module. Each 58,000lb. module was brought into the building on its side through an enlarged, grade-level temporary wall penetration. The modules were then up-ended into their operating position using 300 ton telescoping gantry and lowered onto anchor bolts in a recessed floor area.
The two phases were required to be sequenced in non-preferred order with the first module installed being the once closest to the wall penetration. This created a more restricted ingress and tighter clearances to erect the second module. For both modules, the gantries operated with zero overhead clearance for the tilt-up. Primary equipment consisted of 300 ton hydraulic gantry, two (2) Versa-Lift™ 60/80’s and a jockey tractor.
Project:
- Two (2) modules; each 13ft. x 14ft. x 34ft. and weighing 58,000lb.
- Two separate phases/mobilizations
- Unload, position, erect, level and anchor modules in place
- Erection required gantry extension to 37ft. limit
- Zero overhead clearance with full gantry extension
- Cribbed & plated pit area for module erection
Unique Challenges:
Severely restricted clearances through the wall penetration and into position for upending; particularly with regard to the second module which was placed behind the first (first module was already in position between second module and wall penetration).
To up-end the columns and gain enough height to rotate the columns to their vertical position, the gantry posts were extended. The extension equaled a full 37ft. height extension and zero clearance existed between the lift beam and overhead obstructions.
